* Restructure kbd75 to support multiple revs
* add rev2 files
* fix config comments
* try and avoid duplicate code for LAYOUT macros
* keep the same layouts for rev2 for info.json
* Add QMK Configurator support for the numpad layout
* update readme to talk about rev2
* added additional configurator support
Added support for choosing between 5 configurator options:
Layout (supports all keys)
Layout_ansi_1u
Layout_iso_1u
Layout_ansi
Layout_iso
* confirming to conventions
replaced .h filenames with QMK_KEYBOARD_H